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YL800N.py
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YL800N.py
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import serial
import serial.tools.list_ports
COMType = [str, [str]]
COM_SWITCH_TO_AT = ["+++", []]
COM_AT = ['AT', []]
COM_AT_VERSION = ['AT+VERSION', []]
COM_AT_DEFAULT = ['AT+DEFAULT', []]
COM_AT_RESET = ['AT+RESET', []]
COM_AT_BAUD = ['AT+BAUD', ['{:X}']]
COM_AT_UARTPARA = ['AT+UARTPARA', ['{:d}','{:d}']]
COM_AT_ROLE = ['AT+ROLE', ['{:d}']]
COM_AT_LADDR = ['AT+LADDR', []]
COM_AT_SADDR = ['AT+SADDR', ['{:04x}']]
COM_AT_CHANNEL = ['AT+CHANNEL', ['{:d}']]
COM_AT_PANID = ['AT+PANID', ['{:04x}']]
COM_AT_USERMODE = ['AT+USERMODE', ['{:d}']]
COM_AT_SEND = ['AT+SEND', ['{:04x}', '"{}"']]
BCAST_ADDR = 0xFFFF
# Roles
ROLE_MASTER = 1
ROLE_SLAVE = 0
# Usermodes
USERMODE_HEX = 0
USERMODE_TRANSPARENT = 1
USERMODE_AT = 2
# Baudrates
BAUD_1200 = 1
BAUD_2400 = 2
BAUD_4800 = 3
BAUD_9600 = 4
BAUD_14400 = 5
BAUD_19200 = 6
BAUD_28800 = 7
BAUD_38400 = 8
BAUD_57600 = 9
BAUD_76800 = 10
BAUD_115200 = 11
BAUD_230400 = 12
# UART Parameters
UART_PARAM1_1_STOP_BIT = 0
UART_PARAM1_2_STOP_BIT = 1
UART_PARAM2_NO_PARITY = 0
UART_PARAM2_ODD_PARITY = 1
UART_PARAM2_EVEN_PARITY = 2
class YL800N:
def __init__(self, com_port):
self.__com_port = com_port
self.__ser = serial.Serial(
self.__com_port.device,
9600,
timeout=1,
parity=serial.PARITY_NONE,
stopbits=serial.STOPBITS_ONE,
bytesize=serial.EIGHTBITS)
# self._baudrate = BAUD_9600
def get_com_port_list():
return list(serial.tools.list_ports.comports())
def open_communication(self):
if not self.__ser.is_open:
self.__ser.open()
def close_communication(self):
if self.__ser.is_open:
self.__ser.close()
def is_communication_open(self):
return self.__ser.is_open
def change_mode(self, mode):
result = ""
if mode == USERMODE_AT:
result = self.feed_com(COM_SWITCH_TO_AT)
else:
result = self.feed_com(COM_AT_USERMODE, [mode])
def is_input_buffer_empty(self):
return self.__ser.in_waiting == 0
def read_com(self):
input_buffer = self.__ser.readline()
return input_buffer
def feed_com(self, command:COMType, args=[]):
query_list = [command[0]]
if len(args) > 0:
if len(args) != len(command[1]):
raise ValueError("Argument number mismatch")
query_list.append(f','.join(command[1]).format(*args))
query_str = ' '.join(query_list)
if command != COM_SWITCH_TO_AT:
query_str += '\r\n'
self.__ser.write((query_str).encode())
result = self.__ser.readline()
# Debug
print('{} -> {}'.format(query_str, result))
return result
def safe_feed_com(self, command:COMType, args=[]):
self.change_mode(USERMODE_AT)
result = self.feed_com(command, args)
self.change_mode(USERMODE_TRANSPARENT)
return result
def send_data(self, data, addr=BCAST_ADDR):
data = data.encode()
data_encoded = ''.join(format(x, '02x') for x in data)
self.safe_feed_com(COM_AT_SEND, [addr, data_encoded])
def restore_defaults(self):
self.safe_feed_com(COM_AT_DEFAULT)
def reset(self):
self.safe_feed_com(COM_AT_RESET)
@property
def module_version(self):
result = self.safe_feed_com(COM_AT_VERSION)
return result[-7:-2]
@property
def baudrate(self):
result = self.safe_feed_com(COM_AT_BAUD)
return int(result[-3:-2], 16)
@baudrate.setter
def baudrate(self, baudrate):
self.safe_feed_com(COM_AT_BAUD, [baudrate])
@property
def uart_parity(self):
result = self.safe_feed_com(COM_AT_UARTPARA)
return [int(result[-5:-4]), int(result[-3:-2])]
@uart_parity.setter
def uart_parity(self, parity):
self.safe_feed_com(COM_AT_UARTPARA, [parity[0], parity[1]])
@property
def role(self):
result = self.safe_feed_com(COM_AT_ROLE)
return int(result[-3:-2])
@role.setter
def role(self, role):
self.safe_feed_com(COM_AT_ROLE, [role])
@property
def laddr(self):
result = self.safe_feed_com(COM_AT_LADDR)
return result[-19:-2]
@property
def saddr(self):
result = self.safe_feed_com(COM_AT_SADDR)
return int(result[-4:-2]+result[-6:-4], base=16)
@saddr.setter
def saddr(self, value):
self.safe_feed_com(COM_AT_SADDR, [value])
@property
def channel(self):
result = self.safe_feed_com(COM_AT_CHANNEL)
return int(result[-4:-2])
@channel.setter
def channel(self, value):
self.safe_feed_com(COM_AT_CHANNEL, [value])
@property
def panid(self):
result = self.safe_feed_com(COM_AT_PANID)
return int(result[-4:-2]+result[-6:-4], base=16)
@panid.setter
def panid(self, value):
self.safe_feed_com(COM_AT_PANID, [value])